Dura Ace Di2 RD-R9150 Chain Tools Carbon fiber construction

Carbon fiber construction

Replacement Grade 300 rim

Hook On system

make these tubes 100% Recyclable

Sealheads) - Lyrik Base/Select/Select+/Ultimate (2022+) Generation-D

Dura Ace Di2 RD-R9150 Chain Tools Carbon fiber constructionStable and fast shifting performance even under load Shimano synchronized shift Shimano shadow RD construction Low profile rear derailleur design, less likely to be damaged in crash Maintains compact and smooth appearance Compatible with up to 30T cogs Attributes Cage SS Max Front Difference 16T Maximum Cog 30T Minimum Cog 11T Primary Color Black RD Capacity 35T RD Spring Type Shadow RD Weight 204g Speed 11